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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 114 days
libido test (BSE)
feeding a high producing dairy cow
sow gestation
Hard
2. Male on one pin and female on other side
Sperm survival specs
behavioral signs of estrus
libido test (BSE)
behavioral signs of estrus
3. 19-23 (21) days
cow estrus cycle
Jersey Cow
Sperm survival specs
mare estrus cycle
4. What makes the milk flow through the mammary glands?
Blood
testis (gonads)
penis and prepuce observation (BSE)
uterus
5. 26 hours after estrus begins
kidney stones also called ________ ___________ can develop in the sigmoid flexure
ewe ovulation
cow ovulation
colostrum
6. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
Culls bulls earlier (2 reasons)
sertoli cells
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
#1 cost in production
7. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
prostate gland
cremaster muscle
hormones
sow gestation
8. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
ewe gestation
things to check for in a breeding soundness exam (BSE)
purpose of Breeding Soundness Exam (BSE) for males
Lutinizing Hormone in females
9. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Hormones from both the fetus and the mom.
butterfat
cervix
Dairy calves are removed from cow at birth to...
10. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
uterus
Lutinizing Hormone in males
Mares
sow estrus cycle
11. Not under a timeline - cow can not be sold as steak
sertoli cells
Grading choice
purpose of Breeding Soundness Exam (BSE) for males
mare estrus
12. Milk is 15% ________ and 85% __________.
Follical Stimulating in females
Brown Swiss Cow
dry matter and water
feeding a high producing dairy cow
13. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
retractor muscles
mare estrus
Mares
uterus
14. FEED
#1 cost in production
testosterone
testis (gonads)
Avg. bull specs
15. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
behavioral signs of estrus
Dairy Cattle Lactation (standard)
effects of estrogen
eminal vesicles
16. 147 days
Dairy Cattle Lactation (standard)
age and castration
ewe gestation
scrotum
17. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
1. more cost effective - 2. powdered milk is in excess production
rectal palpation (BSE)
cow gestation
elastrator
18. 30 hours after estrus begins
pelvis
elastrator
why does the cow need fat deposits during pregnancy?
cow ovulation
19. 16-20 hours
Dairy Cattle Gestation
testosterone
growth lost from castration methods (knife & band)
cow estrus
20. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
Where livelihood is in agriculture
testosterone
stag
prostate gland
21. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
effects of estrogen
effects of estrogen
reason for seasonal breeding periods
hypothalamus and pituitary gland
22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
leydid or interstitial cells
reason for seasonal breeding periods
hormones
23. (male) pushes the testes outward toward the legs for a cool-down off of the body
Mares
scrotal circumference (BSE)
cremaster muscle
prostate gland
24. What about the sperm for a bull which has been castrated but still has testicles?
butterfat
why does the cow need fat deposits during pregnancy?
leydid or interstitial cells
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
25. Why does estrus happen before ovulation?
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
normal presentation of the fetus
pelvis
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
26. 26 hours after estrus begins
monorchid
ewe ovulation
stag
Size of cow in relation to the amount of milk produced
27. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
semen evaluation (BSE)
oviducts
things to check for in a breeding soundness exam (BSE)
#1 cost in production
28. 14-19 (17) days
purpose of Breeding Soundness Exam (BSE) for males
ewe estrus cycle
behavioral signs of estrus
Sperm survival specs
29. (male) pushes the testes upward toward the body for warmth or protection
hormones
Sperm growth rate
Mares
dartos muscle
30. 147 days
Dairy Cattle Lactation (standard)
penis sizes vs delivering methods
Follical Stimulating in males
ewe gestation
31. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
reasons for castration
effects of estrogen
Reasons for gestation length being affected
castration
32. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
testis (gonads)
sow gestation
reason for seasonal breeding periods
seminiferous tubules
33. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Lutinizing Hormone in males
prostaglandin
Jersey Cow
effects of estrogen
34. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
4 major reasons for culling dairy cows
oviducts
mare estrus
dartos muscle
35. Days which have decreasing daylight hours
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36. Scar tissue plugs up chambers of udder
organs used in spermatogenesis
Where livelihood is in agriculture
mastitis
ewe gestation
37. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
#1 cost in production
Size of cow in relation to the amount of milk produced
ewe estrus
38. Help to signal hormone levels which we need both in the brain right next to each other.
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
hypothalamus and pituitary gland
things to check for in a breeding soundness exam (BSE)
39. 2 month growth cycle. stored in the epididymis of the bull
dry-off time in dairy cattle
organs used in spermatogenesis
Sperm growth rate
normal presentation of the fetus
40. 19-23 (21) days
sow estrus
ewe estrus cycle
mare ovulation
sow estrus cycle
41. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Dairy Cattle Gestation
Mares
Reasons for gestation length being affected
Grading choice
42. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
Reasons for gestation length being affected
libido test (BSE)
growth lost from castration methods (knife & band)
cow estrus cycle
43. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
Sperm growth rate
hypothalamus and pituitary gland
scrotum
44. Male on one pin and female on other side
testis (gonads)
cervix
1. more cost effective - 2. powdered milk is in excess production
libido test (BSE)
45. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
estrous
ewe gestation
uterus
rectal palpation (BSE)
46. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
epididymis: definition - 3 parts - 4 functions
cryptorchid
sigmoid flexure
reason for seasonal breeding periods
47. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
Dairy Cattle milking schedule
ewe estrus
sow gestation
effects of BST
48. When are steers and heifers weaned from bottle feeding?
mare gestation
prostaglandin
mare estrus
6-8 weeks
49. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
seasonally polyestrous
castration
van deferens
behavioral signs of estrus
50. ~305 days (altough often longer due to breeding difficulties)
polyestrous
elastrator
Dairy Cattle Lactation (standard)
sertoli cells